diff --git a/src/cthulhu/plugins/SSIPProxy/__init__.py b/src/cthulhu/plugins/SSIPProxy/__init__.py
new file mode 100644
index 0000000..f099bac
--- /dev/null
+++ b/src/cthulhu/plugins/SSIPProxy/__init__.py
@@ -0,0 +1,2 @@
+# SSIPProxy plugin - SSIP protocol proxy for Cthulhu
+from .plugin import *
diff --git a/src/cthulhu/plugins/SSIPProxy/meson.build b/src/cthulhu/plugins/SSIPProxy/meson.build
new file mode 100644
index 0000000..0c5f8b7
--- /dev/null
+++ b/src/cthulhu/plugins/SSIPProxy/meson.build
@@ -0,0 +1,14 @@
+ssipproxy_python_sources = files([
+  '__init__.py',
+  'plugin.py'
+])
+
+python3.install_sources(
+  ssipproxy_python_sources,
+  subdir: 'cthulhu/plugins/SSIPProxy'
+)
+
+install_data(
+  'plugin.info',
+  install_dir: python3.get_install_dir() / 'cthulhu' / 'plugins' / 'SSIPProxy'
+)
diff --git a/src/cthulhu/plugins/SSIPProxy/plugin.info b/src/cthulhu/plugins/SSIPProxy/plugin.info
new file mode 100644
index 0000000..9c2d297
--- /dev/null
+++ b/src/cthulhu/plugins/SSIPProxy/plugin.info
@@ -0,0 +1,11 @@
+[Plugin]
+name=SSIP Proxy
+module_name=SSIPProxy
+version=1.0.0
+description=SSIP protocol proxy for speech-dispatcher TCP clients. Allows applications like Say the Spire (Slay the Spire accessibility mod) to have their speech output go through Cthulhu for both speech and braille support.
+authors=Stormux
+copyright=Copyright (c) 2024-2025 Stormux
+website=https://stormux.org
+icon_name=audio-speakers
+builtin=false
+hidden=false
diff --git a/src/cthulhu/plugins/SSIPProxy/plugin.py b/src/cthulhu/plugins/SSIPProxy/plugin.py
new file mode 100644
index 0000000..ea79179
--- /dev/null
+++ b/src/cthulhu/plugins/SSIPProxy/plugin.py
@@ -0,0 +1,587 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2024-2025 Stormux
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
+# Boston MA  02110-1301 USA.
+#
+
+"""SSIP Proxy plugin for Cthulhu screen reader.
+
+This plugin acts as a speech-dispatcher SSIP server, allowing applications
+that use speech-dispatcher's TCP interface (like Say the Spire for Slay the Spire)
+to have their speech output go through Cthulhu for both speech and braille support.
+"""
+
+import logging
+import select
+import socket
+import threading
+from threading import Thread, Lock
+from cthulhu.plugin import Plugin, cthulhu_hookimpl
+from cthulhu import debug
+
+logger = logging.getLogger(__name__)
+
+# Default speech-dispatcher TCP port
+SSIP_PORT = 6560
+
+# SSIP Response codes
+RESP_OK = "200 OK"
+RESP_CLIENT_NAME_SET = "208 OK CLIENT NAME SET"
+RESP_RECEIVING_DATA = "230 OK RECEIVING DATA"
+RESP_MSG_QUEUED = "225 OK MESSAGE QUEUED"
+RESP_BYE = "231 HAPPY HACKING"
+RESP_ERR_INVALID = "300 ERR INVALID COMMAND"
+
+
+class SSIPConnection:
+    """Handles a single SSIP client connection."""
+
+    def __init__(self, clientSocket, plugin):
+        """Initialize the connection handler.
+
+        Args:
+            clientSocket: The client socket connection
+            plugin: Reference to the parent plugin
+        """
+        self.socket = clientSocket
+        self.plugin = plugin
+        self.clientName = None
+        self.receivingData = False
+        self.dataBuffer = []
+        self.msgId = 0
+
+    def send(self, message):
+        """Send a response to the client.
+
+        Args:
+            message: The response message to send
+        """
+        try:
+            response = message + "\r\n"
+            self.socket.sendall(response.encode("utf-8"))
+        except Exception as e:
+            debug.printMessage(debug.LEVEL_WARNING, f"SSIP send error: {e}", True)
+
+    def sendMessageQueued(self, msgId):
+        """Send a message queued response with message ID.
+
+        Sends both lines in a single write to avoid race conditions.
+
+        Args:
+            msgId: The message ID to include
+        """
+        self.sendMultiLine(f"225-{msgId}", "225 OK MESSAGE QUEUED")
+
+    def sendMultiLine(self, line1, line2):
+        """Send a two-line response in a single write.
+
+        This avoids race conditions where the client reads between lines.
+
+        Args:
+            line1: First line of response
+            line2: Second line of response
+        """
+        try:
+            response = f"{line1}\r\n{line2}\r\n"
+            self.socket.sendall(response.encode("utf-8"))
+        except Exception as e:
+            debug.printMessage(debug.LEVEL_WARNING, f"SSIP send error: {e}", True)
+
+    def handleLine(self, line):
+        """Process a single line from the client.
+
+        Args:
+            line: The line to process
+
+        Returns:
+            True to continue, False to close connection
+        """
+        line = line.strip()
+        if not line:
+            return True
+
+        logger.debug(f"SSIP <<< {line}")
+
+        # If we're receiving SPEAK data
+        if self.receivingData:
+            return self.handleDataLine(line)
+
+        # Parse command
+        parts = line.split(None, 1)
+        if not parts:
+            return True
+
+        cmd = parts[0].upper()
+        args = parts[1] if len(parts) > 1 else ""
+
+        if cmd == "SET":
+            return self.handleSet(args)
+        elif cmd == "SPEAK":
+            return self.handleSpeak()
+        elif cmd == "STOP":
+            return self.handleStop(args)
+        elif cmd == "CANCEL":
+            return self.handleCancel(args)
+        elif cmd == "PAUSE":
+            self.send(RESP_OK)
+            return True
+        elif cmd == "RESUME":
+            self.send(RESP_OK)
+            return True
+        elif cmd == "QUIT":
+            self.send(RESP_BYE)
+            return False
+        elif cmd == "HELP":
+            self.send("299-SSIP Proxy for Cthulhu")
+            self.send("299 OK HELP SENT")
+            return True
+        elif cmd == "GET":
+            return self.handleGet(args)
+        elif cmd == "LIST":
+            return self.handleList(args)
+        elif cmd == "HISTORY":
+            return self.handleHistory(args)
+        elif cmd == "CHAR":
+            # Character speaking - extract and speak the character
+            if args:
+                char = args.strip()
+                if char.lower() == "space":
+                    char = " "
+                self.plugin.outputMessage(char)
+            self.msgId += 1
+            self.sendMessageQueued(self.msgId)
+            return True
+        elif cmd == "KEY":
+            # Key speaking - speak the key name
+            if args:
+                self.plugin.outputMessage(args.strip())
+            self.msgId += 1
+            self.sendMessageQueued(self.msgId)
+            return True
+        elif cmd == "SOUND_ICON":
+            # Sound icon - acknowledge but ignore
+            self.msgId += 1
+            self.sendMessageQueued(self.msgId)
+            return True
+        else:
+            logger.debug(f"Unknown SSIP command: {cmd}")
+            self.send(RESP_OK)
+            return True
+
+    def handleGet(self, args):
+        """Handle GET command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        param = args.strip().upper() if args else ""
+
+        if param == "VERSION":
+            self.send("240-speechd-ssip-proxy 0.1")
+            self.send("240 OK VERSION SENT")
+        elif param == "OUTPUT_MODULES":
+            self.send("250-cthulhu")
+            self.send("250 OK MODULES LIST SENT")
+        elif param == "VOICES":
+            self.send("251-cthulhu\tdefault\tnone")
+            self.send("251 OK VOICES LIST SENT")
+        elif param == "RATE" or param == "PITCH" or param == "VOLUME":
+            self.send("251-0")
+            self.send("251 OK GET RETURNED")
+        else:
+            logger.debug(f"Unknown GET parameter: {param}")
+            self.send("260-unknown")
+            self.send("260 OK GET RETURNED")
+
+        return True
+
+    def handleList(self, args):
+        """Handle LIST command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        param = args.strip().upper() if args else ""
+
+        if param == "OUTPUT_MODULES":
+            self.send("250-cthulhu")
+            self.send("250 OK MODULES LIST SENT")
+        elif param == "VOICES":
+            self.send("251-cthulhu\tdefault\tnone")
+            self.send("251 OK VOICE LIST SENT")
+        else:
+            self.send("250 OK LIST SENT")
+
+        return True
+
+    def handleHistory(self, args):
+        """Handle HISTORY command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        parts = args.split() if args else []
+
+        if len(parts) >= 2 and parts[0].upper() == "GET":
+            subCmd = parts[1].upper()
+            if subCmd == "CLIENT_ID":
+                # Return a client ID - send both lines in single write
+                self.sendMultiLine("240-1", "240 OK CLIENT ID SENT")
+            elif subCmd == "MESSAGE_ID":
+                self.sendMultiLine(f"240-{self.msgId}", "240 OK MESSAGE ID SENT")
+            else:
+                self.sendMultiLine("240-0", "240 OK HISTORY GET")
+        elif len(parts) >= 1 and parts[0].upper() == "CURSOR":
+            self.send("200 OK CURSOR SET")
+        elif len(parts) >= 1 and parts[0].upper() == "SAY":
+            # History say - acknowledge
+            self.msgId += 1
+            self.sendMessageQueued(self.msgId)
+        else:
+            self.send("200 OK HISTORY")
+
+        return True
+
+    def handleSet(self, args):
+        """Handle SET command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        parts = args.split(None, 2)
+        if len(parts) < 2:
+            self.send(RESP_OK)
+            return True
+
+        scope = parts[0].lower()
+        param = parts[1].upper()
+        value = parts[2] if len(parts) > 2 else ""
+
+        if param == "CLIENT_NAME":
+            self.clientName = value
+            logger.info(f"SSIP client connected: {value}")
+            self.send(RESP_CLIENT_NAME_SET)
+        elif param == "PRIORITY":
+            self.send(f"200 OK PRIORITY SET")
+        elif param == "RATE":
+            self.send(f"200 OK RATE SET")
+        elif param == "PITCH":
+            self.send(f"200 OK PITCH SET")
+        elif param == "VOLUME":
+            self.send(f"200 OK VOLUME SET")
+        elif param == "VOICE_TYPE":
+            self.send(f"200 OK VOICE SET")
+        elif param == "LANGUAGE":
+            self.send(f"200 OK LANGUAGE SET")
+        elif param == "SSML_MODE":
+            self.send(f"200 OK SSML MODE SET")
+        elif param == "PUNCTUATION":
+            self.send(f"200 OK PUNCTUATION SET")
+        elif param == "SPELLING":
+            self.send(f"200 OK SPELLING SET")
+        elif param == "CAP_LET_RECOGN":
+            self.send(f"200 OK CAP LET RECOGNITION SET")
+        elif param == "OUTPUT_MODULE":
+            self.send(f"200 OK OUTPUT MODULE SET")
+        else:
+            logger.debug(f"Unknown SET parameter: {param}")
+            self.send(RESP_OK)
+
+        return True
+
+    def handleSpeak(self):
+        """Handle SPEAK command.
+
+        Returns:
+            True to continue
+        """
+        self.receivingData = True
+        self.dataBuffer = []
+        self.send(RESP_RECEIVING_DATA)
+        return True
+
+    def handleDataLine(self, line):
+        """Handle a line of SPEAK data.
+
+        Args:
+            line: The data line
+
+        Returns:
+            True to continue
+        """
+        # Check for end-of-data marker (single dot)
+        if line == ".":
+            # End of data - process the message
+            self.receivingData = False
+            text = "\n".join(self.dataBuffer)
+            self.dataBuffer = []
+
+            # Send message ID and queued response together
+            self.msgId += 1
+            self.sendMessageQueued(self.msgId)
+
+            # Forward to Cthulhu
+            if text.strip():
+                self.plugin.outputMessage(text.strip())
+
+            return True
+
+        # Handle dot-escaping (lines starting with . have extra dot)
+        if line.startswith(".."):
+            line = line[1:]
+
+        self.dataBuffer.append(line)
+        return True
+
+    def handleStop(self, args):
+        """Handle STOP command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        # Don't explicitly stop - let speech.speak(interrupt=True) handle it
+        # Calling stop() followed by speak() can cause race conditions
+        # where speech-dispatcher drops the new message
+        self.send(RESP_OK)
+        return True
+
+    def handleCancel(self, args):
+        """Handle CANCEL command.
+
+        Args:
+            args: Command arguments
+
+        Returns:
+            True to continue
+        """
+        self.send(RESP_OK)
+        return True
+
+
+class SSIPProxy(Plugin):
+    """Plugin that provides an SSIP server interface for external applications."""
+
+    def __init__(self):
+        """Initialize the plugin."""
+        super().__init__()
+        self.lock = Lock()
+        self.active = False
+        self.serverThread = None
+        self.serverSocket = None
+        self.clientSockets = []  # Track active client connections
+        self.clientLock = Lock()  # Lock for client list
+
+    @cthulhu_hookimpl
+    def activate(self):
+        """Activate the SSIP proxy plugin."""
+        super().activate()
+        logger.info("Activating SSIP Proxy Plugin")
+        self.activateServer()
+
+    @cthulhu_hookimpl
+    def deactivate(self):
+        """Deactivate the SSIP proxy plugin."""
+        logger.info("Deactivating SSIP Proxy Plugin")
+        self.deactivateServer()
+        super().deactivate()
+
+    def activateServer(self):
+        """Start the SSIP server thread."""
+        with self.lock:
+            self.active = True
+
+        # Only start if not already running
+        if self.serverThread is None or not self.serverThread.is_alive():
+            self.serverThread = Thread(target=self.serverWorker)
+            self.serverThread.daemon = True
+            self.serverThread.start()
+
+    def deactivateServer(self):
+        """Stop the SSIP server thread."""
+        with self.lock:
+            self.active = False
+
+        # Close all client connections first
+        with self.clientLock:
+            for clientSocket in self.clientSockets:
+                try:
+                    clientSocket.close()
+                except Exception:
+                    pass
+            self.clientSockets.clear()
+
+        # Close the server socket to interrupt accept()
+        if self.serverSocket:
+            try:
+                self.serverSocket.close()
+            except Exception:
+                pass
+
+        # Try to join the thread if it's alive, with a timeout
+        if self.serverThread and self.serverThread.is_alive():
+            try:
+                self.serverThread.join(timeout=2.0)
+            except Exception as e:
+                logger.warning(f"Error stopping server thread: {e}")
+
+    def isActive(self):
+        """Check if the server is active."""
+        with self.lock:
+            return self.active
+
+    def outputMessage(self, message):
+        """Output a message through Cthulhu's speech and braille systems.
+
+        Args:
+            message: The message to output
+        """
+        try:
+            # Use speech.speak directly for more reliable rapid-fire messages
+            from cthulhu import speech
+            speech.speak(message, interrupt=True)
+
+            # Also update braille if possible
+            try:
+                scriptManager = self.app.getDynamicApiManager().getAPI('ScriptManager')
+                manager = scriptManager.get_manager()
+                script = manager.get_default_script()
+                if script:
+                    # Flash message to braille
+                    from cthulhu import braille
+                    braille.displayMessage(message)
+            except Exception:
+                pass  # Braille is optional
+        except Exception as e:
+            debug.printMessage(debug.LEVEL_WARNING,
+                f"SSIP output error: {e} for: {message}", True)
+
+    def serverWorker(self):
+        """Worker thread that runs the SSIP server."""
+        try:
+            # Create TCP socket
+            self.serverSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            self.serverSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+
+            try:
+                self.serverSocket.bind(("127.0.0.1", SSIP_PORT))
+            except OSError as e:
+                logger.error(f"Cannot bind to port {SSIP_PORT}: {e}")
+                logger.error("Another process may be using this port.")
+                return
+
+            self.serverSocket.listen(5)
+            debug.printMessage(debug.LEVEL_INFO,
+                f"SSIP Proxy listening on 127.0.0.1:{SSIP_PORT}", True)
+
+            while self.isActive():
+                # Check for new connections with timeout
+                try:
+                    ready, _, _ = select.select([self.serverSocket], [], [], 0.8)
+                except (select.error, ValueError):
+                    break
+
+                if not ready:
+                    continue
+
+                try:
+                    clientSocket, addr = self.serverSocket.accept()
+                    debug.printMessage(debug.LEVEL_INFO,
+                        f"SSIP client connected from {addr}", True)
+
+                    # Handle this client in a separate thread
+                    clientThread = Thread(
+                        target=self.handleClient,
+                        args=(clientSocket,)
+                    )
+                    clientThread.daemon = True
+                    clientThread.start()
+                except Exception as e:
+                    if self.isActive():
+                        logger.error(f"Error accepting connection: {e}")
+
+        except Exception as e:
+            logger.error(f"SSIP server error: {e}")
+        finally:
+            if self.serverSocket:
+                try:
+                    self.serverSocket.close()
+                except Exception:
+                    pass
+            logger.info("SSIP Proxy server stopped")
+
+    def handleClient(self, clientSocket):
+        """Handle a client connection.
+
+        Args:
+            clientSocket: The client socket
+        """
+        # Track this client socket
+        with self.clientLock:
+            self.clientSockets.append(clientSocket)
+
+        # Disable Nagle's algorithm for immediate sending
+        clientSocket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+        clientSocket.settimeout(30.0)
+        connection = SSIPConnection(clientSocket, self)
+        buffer = ""
+
+        try:
+            while self.isActive():
+                try:
+                    data = clientSocket.recv(4096)
+                    if not data:
+                        break
+
+                    buffer += data.decode("utf-8")
+
+                    # Process complete lines
+                    while "\n" in buffer:
+                        line, buffer = buffer.split("\n", 1)
+                        line = line.rstrip("\r")
+                        if not connection.handleLine(line):
+                            return
+                except socket.timeout:
+                    continue
+                except Exception as e:
+                    logger.debug(f"Client read error: {e}")
+                    break
+        finally:
+            # Remove from tracking list
+            with self.clientLock:
+                if clientSocket in self.clientSockets:
+                    self.clientSockets.remove(clientSocket)
+
+            try:
+                clientSocket.close()
+            except Exception:
+                pass
+            debug.printMessage(debug.LEVEL_INFO, "SSIP client disconnected", True)
diff --git a/src/cthulhu/plugins/meson.build b/src/cthulhu/plugins/meson.build
index 0ce7488..31a0684 100644
--- a/src/cthulhu/plugins/meson.build
+++ b/src/cthulhu/plugins/meson.build
@@ -13,3 +13,4 @@ subdir('SpeechHistory')
 subdir('SimplePluginSystem')
 subdir('hello_world')
 subdir('self_voice')
+subdir('SSIPProxy')